Flat knitting machine for producing two or more double pieces of fabric independent from each other



Jan. 2 8, 195% Y w. MEHNERT 252L973 FLAT KNITTING MACHINE FOR PRODUCING TWO OR MORE DOUBLE PIECES OF FABRIC INDEPENDENT FROM EACH OTHER Filed Feb 2%, 1956 3 Sheets-Sheet l INVENTOR 14 44 7-52? V04 KH/NPT Mew NE)??- ATTORN EY Jan. 28, 1958 w. MEHNERT 2,821,073

FLAT KNITTI MACHINE FOR PRODUCING TWO MORE DOUBLE PIECES FABRIC INDEPENDENT FROM E OTHER Filed Feb.- 24, 1956 3 Sheets-Sheet 2 KNVENTOR ML 7-5;? VOL/(HJQET A/E'l/NEPT ATTORNEY Jan. 28, 1958 MEHNERT 2,821,073

FLAT KNITTING MACHINE FOR PRODUCING TWO OR MORE DOUBLE PIECES OF FABRIC INDEPENDENT FROM EACH OTHER Filed Feb. 2%1956 4 3 Sheets-Sheet I5 INVENTOR 144241-52 V01. m-umv- MEHNEIPT ATTO R N EY United States Patent I FLAT KNITTING MACHINE FOR PRODUCING TWO OR MORE DOUBLE PIECES OF FABRIC INDEPENDENT FROM EACH OTHER Walter Mehnert, Karl-Marx-Stadt, Germany, assignor to VEB Fahrradwerk Elite-Diamant, Karl-Marx-Stadt, Germany Application February 24, 1956, Serial No. 567,587

Claims priority, application Germany February 4, 1956 6 Claims. (Cl. 66-64) This invention relates to controls for knitting machines and the like. Patent No. 2,705,408 which issued from application Serial No. 308,057 refers to a flat knitting machine with two needle rows or groups of needle rows arranged one behind the other and consisting of two single needle rows each, the machine being provided with a common cam slide guided along and around the rows. Two or more double-faced pieces of fabric independent of one another can be knitted on this machine.

An object of this invention is to make suitable a machine of the type shown in Patent No. 2,705,408 for the production of pieces of fabric patterned by the use of Jacquard mechanisms. This modification has been applied to known fiat knitting machines and raises no difiiculties with respect thereto because the associated cam slide provides a simple motion to and fro. This adaptation is not practical in a machine of the kind in question because the cam slide is always guided in one and the same direction around the two or more needle rows or groups of needle rows.

The object of the invention is gained in that the cam slide or each single slide of the machine is provided with a selecting drum with jacks turning in accordance with a gauge at each movement of the slide or slides; these jacks are controlled, in accordance with a pattern by means of a Jacquard device fastened at one of the curves in the track of the cam slide or each single slide circulating therealong and a stationary mechanism is placed before the Jacquard device controlling the jacks. The last mentioned mechanism is arranged so that the selecting drums can operate several rows in one and the same pattern position.

The invention will be apparent from the following description when read in conjunction with the accompanying drawings forming part of the specification wherein:

Fig. 1 is a sectional view of a selecting drum and the Jacquard device;

Fig. 2 illustrates a part of a pattern card;

Fig. 3 shows a cam to convey jacks working with the Jacquard device;

Fig. 4 illustrates a selecting drum in working position;

Fig. 5 is a top plan view of the machine.

In accordance with Patent No. 2,705,408, the machine possesses 2 needle rows consisting of two single needle rows each. The first mentioned needle rows can be divided lengthwise into single needle groups side by side.

The cam slide consisting of an endless uninterrupted chain of single slides 3 with one cam system each (Fig. 5) is moved in a track along and around these two needle rows or groups of needle rows. Each of these single slides 3 is provided with a selecting drum 470, the axle of which is parallel to the needle bed 57 of the outer single needle row. These selecting drums 470 are fastened on a shaft which carries a gear wheel 47. It engages a rack 49 by means of its teeth 48. The pattern drums 470 have longitudinal slots in which pivoted jacks 50 are placed. The end of each of the jacks 50 above the associated pivot point shows a butt 510. Below the turn ing point, the jacks 50 are provided with a butt 51. The

- Patented Jan. 28, 1958 ICC lower disengaged end of each of the jacks 50 extends out of the selecting drum 470. The butt 510 acts upon resilient needle guides 54. When such a jack 50 is in operating position, it presses in the needle guide and also the associated knitting needle 55. This causes the butt 56 of the knitting needle 55 to be drawn out of the cam system (Fig. 4).

v The selection of the jacks 50 occurs by means of a known Jacquard device which consists of the prism 42 and the Jacquard card 43 with the perforations 44. The Jacquard card 43 acts upon the axially adjustable jacks 45 which are guided in a stationary bed 41. The position of the bed 41 is best seen in Figs. 1 and 5. The upper end of each of these jacks 45 has a but 46 (indicated in Figs. 1 and 3) which works together with the butt 51 of the jacks 50 of the selecting drums 470. The jacks 45 which meet with no perforations 44 in their Jacquard card 43, arrive at the working position according to Fig. l. The butt 46 presses in the associated jack 50 at the lower end so that the butt 510 then causes the pressing in of the corresponding needle guide 54. The Jacquard device is fastened at a curve of the circulating single slides 3 (Fig. 5). By reason of simplicity the bed 41 for the jacks 45 of the Jacquard device is shown here only. The selecting drums 470 are turned in accordance with the gauge. When their jacks 50 are in a position as required, they are bolted. At the shaft of each selecting drum 470, an axially movable ring 52 is disposed showing a kind of collar open upwardly. It is in the position of application in Fig. 4.

The jacks 50 are seized at their lower end by this collar according to their position. The ring 52 is moved into the position of application by the cams 53 which are stationary directly behind the Jacquard device. The cams 58 (Fig. 5) are placed ahead of the Jacquard device 42. These cams have the purpose of moving the ring 52 into the initial position according to Fig. 1 after each revolution of the slide, to clear the position of the jacks 50 for the next selection.

A small rail 59 (Fig. 5) following the earns 58 has the purpose of conveying into the inactive position, by their butts 510, all jacks 50 previously set in operating position. The cams 58 and the small rail 59 can be disengaged temporarily, when the one and the same position is required of the selecting drums 47 0 for several revolutions.

To control the jacks 45, the Jacquard prism 42 is arranged to be raised and to be lowered. It is lowered after the jacks 45 are controlled accordingly to the pattern and these have again controlled the jacks 50. By means of a special cam 460, seen in Figs. 1 and 3, provided for each single slide 3, and secured thereto, the jacks 45 are brought again into their initial position afterwards, i. e. when the selecting drumhas moved over the jacks 45 with their butts 46, the element 460 returns the jacks into the starting position.

The direction of movement of the cam 460 is indicated by the arrow in Fig. 3.

Since Fig. 1 is a cross section, it cannot be seen therefrom that a series of jacks 45 is provided. However, Figs. 3 and 5 clearly show such series. These jacks 45 are actuated by the Jacquard device with its pattern card 43.

Upon selection of the jacks 45, the jacks 50 with their butts 51 are actuated by the butts 46 of the jacks 45. The jacks 45 have been shown in Figs. 1 and 3.

The apparatus provided in accordance with the invention can provide two or more fabrics dependent on the number of needle beds which are arranged one behind the other.

What is claimed is: j

1. A fiat knitting machine, with at least two needle rows arranged one behind the other and consisting of two single 3 needle rows each for the production of at least two doublefaced pieces of fabric independent of one another, "comprising a curved cam slide constituted by a plurality of single slides and movable along the needle rows, .21 selecting drum positioned at each 'singleslide and'turningat the movement of the cam slide in accordance with the gauge, said drums comprising first'jacks'for controlling the needles, a stationary Iacquard'device fastened atone of the curves in the cam slide and controlling said jacks, and a stationary mechanism adjacent'the Jacquard device for conveying the jacks into inactiveposition.

2. A fiat knitting machine according to claim 1 wherein said stationary mechanism is disengageable.

3. A fiat knitting machine according to claim '1 comprisinga stationary'bed, movable jacks guided in said bed, the Jacquard device acting upon said movable jacks, said movable jacks each includinga butt for controlling the first jacks of the selecting drums, the cam-slide sup porting a cam to convey the movable jacks into rest position after control of the first jacks. V

4. A fiat knitting machine according to claim 1 wherein the first jacks are in a slewable disposition extending out of "their respective selecting drums in a lower disengaged end, an axially movable ring beneath said drums with a collar open upwardly to engage the lower disengaged ends of the first jacks.

5. A fiat knitting machine according to claim 4 wherein the.;stationary mechanism consists ofrcams to'lowerfthe axially movable ring and a small rail which presses in the jacks at their upper butts acting upon the'knitting needles.

6. A flat knitting machine according to.claim 4 wherein stationary cams are positioned adjacent theJacquardrdevice, said stationary cams raising the axially movable rings.

References Cited in thefile of this patent UNITED STATES PATENTS 

